Just got a stack of 3647's and threw a couple in to test. Thought I'd post the results if anyone is interested.
QLIF's:
QL1K's (actually identify as QL2M's):
Both appear to be ES2. Note that the options shown in HWinfo are likely influenced by the BIOS settings between tests (different days) and not necessarily due to the processors themselves. This is also with 2133 mem (12 sticks in the QL1K test, 8 sticks in the QL1F test).
QLIF's:
QL1K's (actually identify as QL2M's):
Both appear to be ES2. Note that the options shown in HWinfo are likely influenced by the BIOS settings between tests (different days) and not necessarily due to the processors themselves. This is also with 2133 mem (12 sticks in the QL1K test, 8 sticks in the QL1F test).